Proofreading, revising, editing

[veopoulouermioni]

Dear colleagues,
Could anyone please explain to me the difference between PROOFREADING,
REVISING and EDITING?
And what about the rates? 

Thank you in advance.

Ermioni Veopoulou
Translator (french, german, english, swedish > greek)
tel./fax:  +30 31 902 584
e-mail:   [EMAIL PROTECTED]